A, B, C, D, E, N = map(int, input().split())

MOD = 10**9+7

def matrix(a, b):
    ans = [[0]*len(b[0]) for _ in range(len(a))]
    for i in range(len(a)):
        for j in range(len(b[0])):
            ans[i][j] = sum(a[i][k]*b[k][j]%MOD for k in range(len(b)))%MOD
    return ans

if N == 0:
    print(A%MOD)
    exit()

dp = [[[0]*4 for _ in range(4)]]
dp[0][0][0] = C%MOD
dp[0][0][1] = D%MOD
dp[0][0][2] = 1
dp[0][1][0] = 1
dp[0][2][2] = 1
dp[0][3][0] = C%MOD
dp[0][3][1] = D%MOD
dp[0][3][2] = 1
dp[0][3][3] = 1
for _ in range(59):
    dp.append(matrix(dp[-1], dp[-1]))
ans = [[B%MOD], [A%MOD], [E%MOD], [(A+B)%MOD]]
for i in range(60):
    if 1<<i & (N-1):
        ans = matrix(dp[i], ans)
    
print(ans[-1][0])